Packing



April 23, 1935. J; BANDISH 1,998,890

PACKING Filed May l, 195s INVENTOR ATTORNEYS Patented Apr. 23, 1935 UNITED. STATES PATENT OFFICE PACKING Joseph M. Bandish, 111. Application May 1, 1933, Serial No. 688,898

It is quite common knowledge and experience that packings. even metallic packings, are not completely satisfactory under certain conditions of high temperature and high pressure such as are to be found in refineries, chemical works and' the like, pump shafts, valve stems and the like frequently scoring or breaking down, or, under such service conditions, injuring the shafts, valve .stems or spindles and/or rendering frequent reed out, is effective in preventing scoring, and

renders moving parts easy of operation.

Objects pertaining to details and economies of my invention will appear from the descripimprovements. c Fig.2 is a fragmentary perspective'view of a tilgilimtao follow. The invention is defined in the c A structure'which embodies the features of my invention is clearly illustrated in the accom- Deriving drawing, in which: v

Fig. 1 is a fragmentary "view *of a packing box and shaft or spindle embodying m'y improved packing,. parts being shown conventionally-for the purpose of illustrating an application packing embodying my improvements.

Fig. 3 is a perspective view of a sheet ofmetal foil partially coated with pulverulent aluminum and a lubricant, this being indicated by stippling.-

Fig. 4 is a conventional illustration of a plastic packing material including shreds. or strips of metal and fibrous material coated with pulverized aluminum and a lubricant, this also beingcon ventionally illustrated bystippling.

In the accompanying drawing, which is conventionalized, l represents a shaft or spindle, 2 a

r fragment of a packing box and .Qapackinggland.

My improved packing 4, which in the' embodiment shown in Figs. 1 and 2 is made upof metal foil ,convolutely or otherwise twisted or wound upon itself and compacted into a rectangu'lar form, may be introduced in a packing box either in the form of rings or in a spiral coil. 1

Where the packing is to be used in high temperatures I preferably employ aluminum foil annealed as disclosed in-the patent to Hall No. 7 1,464,604, dated August 14, l923.- The metal foil is preferably crumpled prior to rolling, and compacting and other forming serves to crumple it sufliciently. A

This metal foil in the preferred embodiment is coated with a lubricant containing a substantial amount of pulverulent or comminuted aluminum. preferably in the form of flakes, aluminum which,

while in finely divided form, still has the form of 10 flakes. This may be mixed with lubricant such as castor oil or some other suitable vegetable or mineral oil in proper quantity to render it easy of application. a 1

As the packing is formed the external surface is is thoroughly coated with this aluminum composition, the coating filling the interstices of the packing and presentinga surface of finely divided aluminum.

when a packing having this coating is installed the particles of aluminum may shift about to fill up the small openings, both inthe packing and on the surface of the shaft, or spindle. or part to which the packing is applied, with I the result that such part becomes coated and its scratches and small depressions are apparentlycompletely filled, presenting a smooth polish-like surface both on the shaft, spindle or part packed and the packing itself, vparticularly where the pachng is a metallic packing.

The result is'found to be that the part packed moves-muchmore .easily than with packings not havingthe features of-this invention, and that neither the shaft nor the packing exhibit the tendency to score. The life of the packing is very 85 materially extended. I In the embodiment of my invention shown in Fig. 4 the comminuted aluminum is applied to a shredded metal such as shreds of metal foil, preferably with asbestos fiber or other fibrous mate- 40 rial mixed therewith. This packing material is introduced in the packing box and likewise presentsthecomminuted aluminum to the bearing surface so that theii'regularities of such bearing surface, such as scratches or scores, become filled and a smooth, freely moving working surface is presented to the packing.

My improved packing is particularly desirable for use'in-high pressure and high temperature conditions, as such conditions present difliculties 5 which have not been heretofore satisfactorily met, although it is' desirable in'conditions'usually met as packings' used for such conditions are correspondingly improved.

I havenot attempted to illustrate various as it is believed that this diaclomrewfll enable those skilled in the art to embody or adapt the ,same as may be desired. 1

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

l. A packing for moving parts or a, con- 2' I 1,998,890 adaptations and embodiments of my invention sisting of a packing element or member coated with a mixture of comminuted aluminum flakes and a lubricant. I

2. A packing for moving parts or consisting of metal foil compacted into a packing element or member and coated with a lubricant containing comminuted aluminum flakes.

JOSEPH M. BANDISH. 

